Yes

you do need a jacket based on the weather in Pamplona, Navarre, Spain 1 second ago

Why? Because it's cool. Pleasantly cool, but cool and it's windy enough to give you a brand new hairdo!
51°F11°C & Cloudy

Wind is 11 mph17 km/h from the South, gusting to 22 mph35 km/h
January 22
7am52°F11°C11 mph18 km/h SouthMostly Cloudy
8am54°F12°C11 mph18 km/h SouthCloudy
9am54°F12°C10 mph15 km/h SouthCloudy
10am54°F12°C8 mph13 km/h SouthCloudy
11am53°F12°C7 mph11 km/h SouthCloudy
12pm51°F11°C6 mph9 km/h SouthCloudy
1pm50°F10°C5 mph8 km/h SouthMostly Cloudy
2pm49°F10°C3 mph5 km/h SouthCloudy
3pm49°F9°C2 mph3 km/h SoutheastDrizzle
4pm48°F9°C2 mph3 km/h SouthDrizzle
5pm48°F9°C2 mph4 km/h SoutheastDrizzle
6pm48°F9°C1 mph2 km/h SoutheastRain
DateLowHighWindDayNight
January 2143°F6°C54°F12°C8 mph14 km/h from SoutheastDrizzleRain
January 2240°F4°C51°F11°C4 mph6 km/h from NorthPartly CloudyPartly Cloudy
January 2337°F3°C56°F13°C7 mph11 km/h from SouthMostly CloudyCloudy
January 2441°F5°C53°F12°C5 mph9 km/h from SouthRainRain
January 2536°F2°C50°F10°C13 mph20 km/h from SoutheastMostly CloudyWindy
January 2644°F6°C56°F13°C13 mph21 km/h from SouthRainDrizzle
January 2737°F3°C48°F9°C8 mph13 km/h from WestMostly CloudyMostly Cloudy

Yes

Low of 39°F4°C, High of 51°F11°C
Wind: 4 mph6 km/h
Precipitation: None

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